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-rw-r--r--mysql-test/t/type_bit.test24
1 files changed, 24 insertions, 0 deletions
diff --git a/mysql-test/t/type_bit.test b/mysql-test/t/type_bit.test
index ae725b3b235..8d6b8fbbc4f 100644
--- a/mysql-test/t/type_bit.test
+++ b/mysql-test/t/type_bit.test
@@ -272,6 +272,30 @@ handler t1 read a=(1);
handler t1 close;
drop table t1;
+#
+# Bug #30219: GROUP BY a column of the BIT type
+#
+
+CREATE TABLE t1 (b BIT(2));
+INSERT INTO t1 (b) VALUES (1), (3), (0), (3);
+SELECT b+0, COUNT(DISTINCT b) FROM t1 GROUP BY b;
+DROP TABLE t1;
+
+CREATE TABLE t1 (b BIT(2), a VARCHAR(5));
+INSERT INTO t1 (b, a) VALUES (1, "x"), (3, "zz"), (0, "y"), (3, "z");
+SELECT b+0, COUNT(DISTINCT a) FROM t1 GROUP BY b;
+DROP TABLE t1;
+
+CREATE TABLE t1 (a CHAR(5), b BIT(2));
+INSERT INTO t1 (b, a) VALUES (1, "x"), (3, "zz"), (0, "y"), (3, "z");
+SELECT b+0, COUNT(DISTINCT a) FROM t1 GROUP BY b;
+DROP TABLE t1;
+
+CREATE TABLE t1 (a INT, b BIT(2));
+INSERT INTO t1 (b, a) VALUES (1, 1), (3, 2), (0, 3), (3, 4);
+SELECT b+0, COUNT(DISTINCT a) FROM t1 GROUP BY b;
+DROP TABLE t1;
+
--echo End of 5.0 tests
#